I have a Beamer presentation with multiple authors and I would like their e-mail addresses to be displayed underneath each author name. The post Email field in beamer class? is simple enough to do for a single author, but for multiple authors the results are disappointing:

John Doe
john@example.com Jane Doe
jane.doe@example.com

instead of

John Doe Jane Doe
john@example.com jane@example.com

I can sort-of understand why this is happening, but I am not sure how to resolve this. In a tabular environment fixing this would involve a number of paragraph boxes or minipages...

Using a smaller, non-monospace font for the e-mail addresses helps keep their width down, but it is not critical. The width of the \parbox should probably be adjusted, depending on the number of authors and the length of their names and mail addresses.